Female Adapter, Slip x FPT PVC Schedule 80 3/4" (835-007)

This 3/4" Schedule 80 PVC Female Adapter provides a permanent, pressure-rated transition from a solvent-cemented PVC pipe system to a 3/4" female NPT threaded connection, enabling a Schedule 80 PVC pipe run to receive male-threaded nipples, fittings, valve tail-pieces, and equipment ports at the pipe-to-thread interface. The slip socket end accepts standard 3/4" PVC pipe for solvent cement joining, while the FPT end receives any compatible 3/4" male-threaded (MPT) component on the threaded side.

The female adapter receives male-threaded components at its FPT end — the inverse of the male adapter, which presents an MPT end that inserts into female-threaded ports. When the component being connected to the 3/4" PVC run presents a male-threaded end — a threaded nipple, an MPT valve tail-piece, a male-threaded pump outlet, or an externally threaded equipment port — the female adapter is the correct selection. When the upstream piping must insert into a female-threaded port, the male adapter (836-series) applies. At 3/4", both adapter types are frequently used together at valve bodies, union assemblies, and equipment connections where both the inlet and outlet of the threaded component must be adapted back to solvent-welded PVC pipe.

At 3/4" Schedule 80, the 835-007 serves a pipe size with a specific and well-defined application profile in commercial and industrial systems. Three-quarter inch PVC pipe appears across chemical dosing headers, irrigation control valve connection runs, instrument supply lines, small equipment feed connections, and secondary distribution branches where the elevated Schedule 80 pressure rating is specified over Schedule 40 equivalents. The female adapter at this size is a routine transition fitting wherever these 3/4" Schedule 80 solvent-welded runs must terminate at male-threaded components — dosing pump outlets, threaded valve tails, MPT nipple assemblies, and instrument valve male-threaded ends. The higher pressure rating at 3/4" Schedule 80 (~690 psi) vs. the 1" equivalent (~450 psi) makes the 835-007 particularly well suited for the high-pressure chemical dosing and irrigation control valve contexts where 3/4" Schedule 80 is most commonly specified.

This application breadth at 3/4" is what distinguishes the 835-007 from the 835-010 at 1". Where the 1" female adapter serves the broad primary header and distribution system contexts associated with 1" Schedule 80, the 3/4" adapter serves the more specialized small-bore high-pressure applications — chemical dosing, irrigation control, and instrument supply — where the 3/4" pipe size is specifically chosen for its pressure performance. The chemical dosing and injection system context is particularly defining at this pipe size: fully threaded Schedule 80 dosing assemblies routinely combine female adapters at solvent-welded system connection points, allowing the threaded dosing assembly to be dismantled for service without cutting into the cemented pipe system on either side.

Manufactured in dark gray Schedule 80 PVC, this adapter delivers the increased wall thickness and mechanical strength required in industrial, chemical, and commercial pressure piping where Schedule 40 ratings are insufficient. PVC's broad chemical resistance covers acids, bases, salts, chlorine, and most common process fluids, providing long service life in corrosive environments where metal adapters would corrode, scale, or seize on threads. NSF/ANSI 61 listing confirms suitability for potable water contact.

Rated to 690 psi at 73°F, this fitting handles standard to elevated pressure service across the full range of 3/4" Schedule 80 PVC applications. For the slip socket end, clean and dry the pipe end and socket interior before application. Apply purple PVC primer to both mating surfaces, then apply a uniform coat of Schedule 80 PVC solvent cement to both the pipe end and socket interior before inserting the pipe. Hold with a slight quarter-turn twist for 30 seconds and allow full cure time per the cement manufacturer's temperature and humidity guidelines before pressurizing. Apply PTFE tape or compatible thread sealant to all male threads engaging the FPT end before assembly. Hand-tighten the male-threaded component plus one to two turns — do not over-torque, as excessive force risks cracking the female threads in the adapter body. Apply published pressure derating factors for service temperatures above 73°F.

Specifications:

Industries & Applications:

• Chemical Dosing & Injection Systems — Transitions a 3/4" Schedule 80 PVC solvent-welded process line to a male-threaded nipple, MPT dosing pump outlet, back-pressure valve tail-piece, or externally threaded injection assembly connection in chemical dosing headers and reagent distribution runs where the 3/4" Schedule 80 pressure rating is specified and the female adapter provides the cemented system connection point for a threaded dosing assembly that can be dismantled for service without cutting into the surrounding cemented piping
• Irrigation Control Valve Assemblies — Connects solvent-cemented 3/4" Schedule 80 PVC pipe runs to male-threaded control valve tail-pieces, filter housing outlet ports, fertigation equipment MPT connections, and pump station outlet nipples in commercial and agricultural irrigation systems where threaded Schedule 80 construction at valve stations provides disassembly access for seasonal service and the female adapter is the transition fitting at the solvent-welded pipe end
• Instrument Supply & Control System Piping — Provides a slip-to-FPT transition at male-threaded instrument supply valve ends, flow indicator MPT outlets, pressure transmitter body connections, and control system threaded component ends on 3/4" Schedule 80 PVC instrument supply runs where the solvent-welded pipe system must terminate at a male-threaded instrument or control system component
• Industrial Process Piping — Connects 3/4" Schedule 80 PVC solvent-welded process lines to male-threaded nipple ends, MPT valve connections, externally threaded equipment ports, and pump outlet fittings in process piping assemblies at water treatment, chemical processing, and manufacturing facilities where the 3/4" Schedule 80 pressure rating is specified at the pipe-to-thread transition point
• Commercial Plumbing — Transitions 3/4" Schedule 80 PVC solvent-welded supply runs to male-threaded shutoff valve tail-pieces, pressure gauge connections, backflow preventer outlet ports, and equipment connection nipples in mechanical room and building water distribution systems requiring Schedule 80 pressure performance at the pipe-to-thread transition
• Water & Wastewater Treatment — Provides a slip-to-FPT transition at male-threaded pump outlet nipples, chemical dosing equipment MPT connections, filter vessel outlet ports, and instrument valve ends along 3/4" Schedule 80 PVC headers in municipal and industrial water treatment facilities
• HVAC & Mechanical Systems — Used in 3/4" Schedule 80 PVC cooling tower chemical feed lines, glycol distribution branches, treated water secondary runs, and instrument supply piping where a slip-to-FPT female adapter provides a schedule-consistent transition from solvent-welded pipe to male-threaded mechanical system components at the 3/4" pipe size